Process for the manufacture of steel.



G. J. STOCK.

PROCESS FOR THE MANUFACTURE (JP STEEL.

APPLICATION FILED JULY 1,1909.

Patented Sept. 7, 1909.-

4 SHEETS-SHEET 1.

G. J. STOCK.- PROGE$S FOR THE MANUFACTURE OF STEEL.

- APPLIUATION FILED JULY1,1909.

933,596., Patented Sept. 7,1909. w 4 simian-SHEET 2. W

G. J. STOCK.

PROCESS FOR THE MANUFACTURE OF STEEL.

ASSPLIOATION FILED JULY 1,1909.

Patented Sept. 7, 1909.

4 SHEETS-BHBET 3.

G. J. STOCK.

moosss FOR THE MANUFACTURE OF STEEL.

APPLICATION FILED JULY 1,1909.

Patented Sept. 7, 1909.

4 SHEETSSHEET 4.

Ireland,

illlfi of combustion of the mixture o'isir anal been pi-evioosi charged.

GUY

FRQUESfi FOE MEL."

EAT/ICES STOCK, 1F DBiIZL-KNG-TQEEI. EI'GLAND.

Specification of Letters Instant.

Patented Sept. *3, 190%..

Application filed July 1, 1909. Serial iO. 5953a.

To all whom it may concern;

Be it known that l GUY JAMES STOCK, 3 subject of the King of Great Britain and. residing at Cockci'ton Hall, Dairliugion. county of Diulioi'n, Engiumi, have invented ceilain new and useful ovouienls in for the Kimmie-(mire of Stem; and i do hereby declare the foilowizig to be a full, clean, and exzici Lies 'ption the invention, such as will enable ollieiis skilled in "the art to which it appei'ioins is make and use iiic some.

My nivei ion (:OiiSlSl'S in. a novel or improved process for producing steel, in which the material be seduced to stool, in (l being mailed in CUPOil or oliliei' melting furnace and charged inlo the converter vcssel in u inoiton stoic, melted in the con .GilUl vessel itself, into which it is charged in the form of )ig iron, scrap, or the like materials in the same condition as it would be charged int c cupolm. The converter being provided in the usual Way with the requisiie lining; of rci'i'aclory material is also provide? with icons fox the injection. of air through twyers in conjunction withu. series 01" for the injection of liquid fuel. such as oil spray or gas, so that a high lgcmpez'zy oil spray, or air and gas, or a mixture of all .these, is set up, lvhe heat from the combustion soproduceci being applied. lo niell; llic pig); iron and scrap, Willi which ilie converter has 2 1 11851 these inutcriuls are pi'oporl fmei tiil, the jets oi oi oi. gas are turned oil and the injection oi oi: continued, by which lne molten cznrbid of iron is converted tosses in ine ordinary way. But in order i'o hooked ail into the converter, 1 provide sir heating chainhers which E temi scoiiomizeis, in which the air is conveyedl'nrougli 2; series of passages the waste heat, which vol or tubes healed by I escapes from nose of the. converter ing the preliminary heating up 01 the VB.

and the melting of the charge. In orolcr to effect tins, the converter undei'iraine is so mounted on a turntable liiatil can roiaio on its vertical axis. This enables the converter to be set in one \ii'i'QCiiOD for the urpose of charging it Wiiii the material to no melted, and afterward to be set with its nose 0 0- site to the, economizer, the economize? lasing A in desi n, capacity and position, aclapt'ed. for

the purpose. A second economizer is prefer ably provided to be used as a substitute when lion of which the reg;

required. In consequence. of the turniablc movement oi the. underfi'anie, the blast ma n from the QCKJXIQIZI-VQL' to ilie blast box is car ried l'liiou. l1 ii si J'iil box in "the center of c1 52 w the turntable to admit oi. this movement. The )luillilry trunnion rotation of the being cav ml out in iiie usual We. '5 illB bios-l being hot is not carried C Oil "KS 1 (EXC- porno... i

convev may fro? mental,

V: A Y. air, the nu -noes ZQSLili) being udged li'om he flame charged 1mm. the nose of the vessel. Bill, for simgilicity of clesccipsion, I shall to oil only. from-the aopiico- .tc generation of host foicombustion Wil i b8 clearly underszi f nail? an hour, the

stood. After a time, Vessel becomes while hot and begins to suppiy hot blast. It is then turned away from the ocononiizer. the -fuel and illlllG-(l 05 and charged with scrap and pig iron, with the scrap preferably placed toward the back, and when so charged, the vessel is again turned iowin'd the economizer as before. Theaiz' blast and oil being turned on om regui required, the charge in duo-course, say an hour or so, is melted, and when it has been ascertained that the melting process is complele and the charge ready to blow, lilo vessel is turned up into a vertioail oosition, the oil. lam-nod off, and the full blast of lioAiedEir thmugh me-twyers is tucjoecl 031,60id sip: being also passed through the oil to ke pthem cool. The usual recess coiivscsio then takes place, clurmg which time Wastc'lieol is ailowecl to escope into the open, so that the economize! is not. injurecl/by theslag formed during conversion, after which the vessel is turned clown, and is molten contents poured out into 9. logile oi other receptacle.

Although the process above described will been arrangecl' 40 ative positions.

be subject to variation more or less according 'to circumstances, the skilled steel maker will readily understand therefrom how my invention is intended to be applied 5 and carried into efi'ect, and that the advantages incidental thereto are" as follows Economy in the production of...steel, the

metalloids and manganese being more quickly reduced by the use of hot air instead of cold and the process accelerated by the increased temperature allowing the charge to be blown with less percentage of silicon and manga nese which decreases the percentage loss on the charge. Furthermore, the quality of the steel-produced depends mainly onthat of the ingredients charged into the converter, and is not liable to be detrimentally affected by the use'of impure fuel in the cupola or other melting furnace. Also the operator has the heat under entire control at all stages of the process. But in order that suitable apparatus may be provided, erected and operated as required for the purpose of my invention, I will now proceed to further describe the same, and for that purpose shall refer to the annexed sheets of drawings forming part of this specification, it being understood that the invention is not restricted to the actual construction or ar- 3o rangements of the parts or details shown, so

long as such construction and arrangement of the several parts or details permit of, or is adapted for conveniently carrying out the process of steel making essentially as hereinbefore set forth.

tain of its accessory parts, Fig. 4 being a detail view drawn to a larger scale and mainly in section showing arrangement of blast box and its connections, including the oil injection tubes and the oil delivery pipe, from which they are supplied. Fig. 5 is 'a'diagrammatic View on a small scale of an oil storage tanker reservoir, from which the oil is charged into theoil supply pipe by pres sure, provision being made for turning ott' the oil supply from the converter at will,

and passing cold air through the oil jets under pressure/ as required.

A is the converter or vessel in which the materials such as pig and scrap iron are converted and is preferably oval in section, as in this'form a larger surface of the contents is exposed to the action ofthe hot gases for melting.

B is the economizer or chamber in which the air charged into the converter is heated.

its connections.

beforehand by .the waste heat discharged from the said converter during the period of melting. i

C C are the air blast twyer boxes and their connections D -is the oil storage tank or reservoir and The "converter vessel is mounted on trunnions a, a"journaled into the standardsb b, c 0? c representing an arrangement of any suitable gearing such as worm gearing-for turning the converter A on its trunnions as required by the process, that is to say, from the steel conversion position shown in dotted lines to the melting position shown in full lines as shown in Fig. 1. The standards b b" are erected on the platform or girder beam (Z of a turntable and with the standards b 6 forms the underframe of the converter.

(Z is the turntable bed plate, on which is provided a circular groove or track cl provided with ball bearings as shown, the platform or girder beam (Z being correspondingly furnished with grooves or recesses to enable the converter to be rotated to the right or left on its vertical axis, for which suitable gearing is provided if required but not shown.

The economizer B is provided with a system of pipes, checker work, or a combination of these for absorbing the waste heat from the converter when turned toward it as shown in Fig. 1', a being a chimney or uptake for drawing the hot through it. Air from the blowing engine is delivered into the economizer at f and passing through a system of pipcssuch as f, travels at a high temperature along a pipe y to the converter terminating in a two-way branch pipe g leading into the blast boxes U C, H and through the twycrs it into the converter. But to accommodate the rotating movements of the converter, two stutling boxes are provided and formed in theusual way by the aid of asbestos packing, one stuffing box being in at where the air pipe passes through the turntable in line with the .:;I-

tical axis of the converter, and the other at in line with the trunnions axis.

y is the oil supply pipe and j are small oil jets extending therefrom into the twycrs h. The oil pipe is supplied from any convenient or available source under pressure such as an oil storage tank D as shown in Fig. 5, the transmission pipe 9' being flexible on account of the movements of the con-- verter. Y

A: represents an oil valve, and l an air valve, so that the discharge of oil into the oil pipe ralrbe turned on or off at will, and by means of val ve Z, the pressure of air for driving the oil through to the twycrs is regulated as desired, l being the air supply pipeto the oil storage tank. In order to drive air through the oil injectors to keep them cool, when the oil is shut off a by-pass m with controlling valve m is provided to afford a direct communication bet-ween pipes l and j.

Qiently supplied for the purposes of my invention.

Having thus described my invention, what I desire to claim and secure by Letters Patent in the United States, is

1. In the production of steel by means of a Bessemer or pneumatic converter arranged in connection with an econom1zer, the process of meltlng the iron and passing the products of combustion through the economizer, then moving the converter and converting the iron therein into steel, allowing the products of combustion to go to waste, and heating the air supply for each operation by the economizer, substantially as described.

2. In the production of steel by means of l a Bessemer or pneumatic converter arranged (in combination with an economizer, the process of melting a charge of metal in said converter by means of, fuel forced into said converter through the twyers thereof, al-

lowing the hot products of combustion to pass through the economizer, then tilting the converter and blowing air therethrough,

} GUY JAMES srocrr. Witnesses ROBERT WV. Pmnsox,

'lnoMAs ERNEST I'IUIL.

and heating the air by the economizer dur- I 

